Lighting unit



FIG. 1 is an end view showing my lighting unit;

FIG. 2 is a view from the other end;

FIG. 3 is a side elevation;

FIG. 4 is a plan view; and,

FIG. 5 is a perspective view.

The bottom of the fixture is hidden in use and is not part of the claimed design. 

The ornamental design for a lighting unit, as shown and described. 